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热解析冷原子吸收光谱汞直接测量法测量烟用材料中总汞
2013-03-13 10:15:25 益择发布张新恒 1 谢风华2 李修艳2
1.上海烟草集团北京卷烟厂技术中心 北京朝阳区管庄西里42 号 100024
2.北京莱伯泰科科技有限公司 北京空港工业区B 区安庆大街6 号 101312
关键词：热解析；金汞齐；冷原子吸收光谱；汞直接测量；选择性吸附；烟用材料
摘要：利用热解析冷原子吸收光谱汞直接测量法对烟丝、滤棒、包装材料、香精和接装
纸等不同种类烟用材料中的汞进行检测。结果表明：①检出限0.038 ug/kg；回收率
97.6-103.0%；RSD=0.59%；测量范围0～1000ug/L。②热解析冷原子吸收光谱汞直接测量结
果略高于经消化处理样品测量结果，与AFS 法相比无明显差异。③热解析冷原子吸收光谱符
合朗伯-比尔定律。④热解析冷原子吸收光谱汞直接测量法适用于烟用材料汞含量的直接测
量，方法简单、快速。
Direct Mercury Analyzer for Analysis of Total Mercury in Tobacco Materials by Thermal
Decomposition and Cold Atomic Absorption Spectrometry
ZHANG XIN-HENG（1），XIE FENG-HUA（2），LI XIU-YAN（2）
1．Shanghai Tobacco Group， Technology Center of Beijing Cigarette Factory, Beijing
100024, China
2．Beijing LabTech Ltd., Beijing 101312,China
Keywords: thermal decomposition; gold amalgam; CAAS; Direct analysis of mercury ;
Selective adsorption; Tobacco materials
Abstract: Measure the mercury content in various tabacco materials such as tobacco, filter,
Packaging materials, flavor, tobacco paper etc. by thermal decomposition and cold atomic
absorption spectrometry method. The experimental result shows that: ① Detection limit 0.038
ug/kg ； Recovery 97.6-103.0%；RSD=0.59%; working range 0～1000 ng Hg. ② the mercury
content that directly measured by thermal decomposition and cold atomic absorption spectrometry
is slightly higher than that of methods which need sample chemical pretreatment, and there is no
obvious difference with the result that tested by AFS method. ③ Thermal decomposition and cold
atomic absorption spectrometry obeys the Lambert - Beer‘s law. ④ The advantage of this method:
direct analysis of mercury, simple and fast. Therefore, direct mercury analyzer by thermal
decomposition and cold atomic absorption spectrometry is applicable to analysis of total mercury in
tobacco materials.
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